Yup, I think it is a voltage thing. I just checked the voltage using the camera UI (night time with IR's on) and it is polling about 10.5 - 10.8 volts. Happily all seems to be working now. But if I ever get another one of these cameras I will go ahead and get the higher voltage power supply.
+1 @pozello - post #494. Specifically it's a voltage drop thing. See Wikipedia definition of the PoE standard and the power available AT the device:
https://en.m.wikipedia.org/wiki/Power_over_Ethernet
Generally, voltage drop problems are addressed by lowering the resistance of the circuit, i.e., shortening the length of the circuit, increasing the wire size (cat6 vs
cat5), and/or using pure copper instead of CCA Ethernet cable.
Increasing the voltage of the power supply will work provided it is within the range of the device's voltage specification. Generally, here in the U.S., the UL Standard specifies electrical devices should be able to be operated within plus or minus 10% of it's listing.
I do not have a PoE+ switch and because of my reading of all the posters on this wonderful website regarding issues with this camera's PoE, I decided to power my camera with a separate 12 volt, 2amp power wart that is less than 10 feet from the camera. Of course this means you need and electrical outlet nearby. In my case, my camera has been working problem free for 4+ months (fingers crossed)
